Laundry processing device and method for controlling same

ABSTRACT

The laundry processing device according to the present invention comprises a plurality of washing units which wash independently of each other, and if vibration exceeding a configured value is generated while a single washing unit is washing, then water is supplied to rest of the washing units and a motor is rotated, thereby reducing the vibration.

TECHNICAL FIELD

The present invention relates to a laundry processing device having a plurality of washing units, and more particularly, to a laundry processing device for reducing vibration generated during washing, and a method for controlling the same.

BACKGROUND ART

Generally, a laundry processing device is an apparatus that processes laundry through various operations such as washing, spin-dry and/or drying. Such a laundry processing device includes a laundry processing device that washes laundry such as clothing or bedding by using the emulsifying action of the detergent, the water current action caused by the rotation of a tub or a laundry blade, and a mechanical force applied by the laundry blade, a dryer that applies a hot air or a cold air to dry the laundry, and a refresher that removes the wrinkles of the clothes by applying steam. In addition, a washer-drier provides a combination of various functions.

Vibration may be generated as a motor connected to the tub rotates during the washing operation of the laundry processing device. Particularly, when a spin-dry process of the laundry processing device is performed, the motor rotates rapidly, so that relatively large vibration may occur.

Recently, a laundry processing device including a plurality of washing units independently performing washing has been under development. In addition, a technology of reducing vibration by using the rest of washing units when vibration is generated while a single washing unit performs washing has been studied.

DISCLOSURE Technical Problem

It is an object of the present invention to provide a laundry processing device, including a plurality of washing units that implement washing independently of each other, capable of reducing vibration by using the rest of washing units when vibration is generated while a single washing unit performs washing, and a method for controlling the same.

Technical Solution

In an aspect, there is provided a laundry processing device including: a first washing unit which performs washing; a first controller which controls operation of the first washing unit; a second washing unit which is installed in a lower portion of the first washing unit to be in contact with the first washing unit, and performs washing independently; a vibration sensor which is disposed in a contact portion of the first washing unit and the second washing unit to detect vibration; and a second controller for controlling the second washing unit to be supplied with water in response to the vibration detected by the vibration sensor, in a state where the second washing unit does not perform washing.

In another aspect, there is provided a method for controlling a laundry processing device comprising a first washing unit and a second washing unit for performing washing in an independent washing space, wherein the first washing unit is disposed above the second washing unit, the method including: a start step of performing washing according to an inputted setting by the first washing unit; a detection step of detecting a vibration amount by a vibration sensor disposed in a contact portion of the first washing unit and the second washing unit; and a control step of controlling the second washing unit to be supplied with water, in response to a vibration detected by the vibration sensor, in a state where the second washing unit does not perform washing.

Advantageous Effects

According to the laundry processing device and the method for controlling the same of the present invention, in the laundry processing device having a plurality of washing units that implement washing independently of each other, when vibration is generated while a single washing unit performs washing, water is supplied to the rest of washing units, and the motor is rotated to reduce vibration. Thus, damage to the laundry processing device can be prevented. Further, when the vibration of the laundry processing device is reduced, a tub of washing unit can be cleaned by using the supplied water, thereby efficiently utilizing the water used for reducing the vibration.

DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view illustrating a shape of a laundry processing device according to an embodiment of the present invention.

FIG. 2 is a perspective view illustrating a shape of a laundry processing device according to another embodiment of the present invention.

FIG. 3 is a block diagram illustrating a configuration of a laundry processing device according to an embodiment of the present invention.

FIG. 4 is a diagram for explaining a contact portion in which a vibration sensor is disposed and a structure of a laundry processing device according to an embodiment of the present invention.

FIG. 5 is a diagram for explaining a structure of a vibration sensor according to an embodiment of the present invention.

FIG. 6 is a diagram for explaining a method of controlling a laundry processing device according to an embodiment of the present invention.

MODE FOR INVENTION

Hereinafter, preferred embodiments of the present invention will be described with standard to the accompanying drawings. In describing the present embodiment, the same designations and the same standard numerals are used for the same components, and further description thereof will be omitted.

FIG. 1 is a perspective view illustrating a shape of a laundry processing device 100 according to an embodiment of the present invention, and FIG. 2 is a perspective view illustrating a shape of a laundry processing device according to another embodiment of the present invention.

Referring to FIG. 1, a laundry processing device 100 includes a vibration sensor (not shown), a first washing unit 140, and a second washing unit 150.

The first washing unit 140 and the second washing unit 150 are disposed vertically. The first washing unit 140 is disposed in contact with the upper portion the second washing unit 150, and the first washing unit 140 and the second washing unit 150 can be coupled to and separated from each other.

The first washing unit 140 is in the form of a front load washing machine, and the second washing unit 150 is in the form of a top load washing machine.

The second washing unit 150 has a structure in which it is slidably opened and closed in the front and rear direction like a drawer. When the second washing unit 150 is pulled to the front, the upper end of the second washing unit 150 is exposed. A second input unit 154, a second display unit 152, and a second door 157 are disposed in the upper end of the second washing unit 150.

The first washing unit 140 may include a first input unit 144, a first display unit 142 and a first door 147. The second washing unit 150 may include the second input unit 154, the second display unit 152, and the second door 157.

The first washing unit 140 and the second washing unit 150 are provided with separate input units 144 and 154 and display units 142 and 152, so that a command can be input independently of each other and an operation corresponding to the inputted command can be performed.

The first washing unit 140 and the second washing unit 150 may respectively include a water storage tank for containing water, a tub 201, 202 which accommodates laundry and is rotatably installed in the water storage tank, a motor for rotating the tub, a water supply device for supplying water into the water storage tank or the tub, and a draining device for draining water in the water storage tank, and perform washing independently of each other.

FIG. 1 shows that the capacity of the tub of the first washing unit 140 is larger than the capacity of the tub of the second washing unit 150. However, the capacity of the tub of the first washing unit 140 may be equal to or smaller than the capacity of the tub of the second washing unit 150. The tub capacity of each of the washing units 140 and 150 is not limited.

The first washing unit 140 and the second washing unit 150 may be a washer-drier for simultaneously providing a washing function and a drying function.

The above described configurations of the first washing unit 140 and the second washing unit 150 may be provided in a general laundry processing device, which can be obviously understood by those skilled in the art. Thus, a detailed description thereof will be omitted.

Referring to FIG. 2, both the first washing unit 140 and the second washing unit 150 are in the form of a front load washing machine. However, both the first washing unit 140 and the second washing unit 150 may be in the form of a top-load washing machine, and the shape of the first washing unit 140 and the second washing unit 150 are not limited. The second washing unit 150 may be disposed in the upper portion of the first washing unit 140, and may be disposed in the lower portion of the first washing unit 140.

When only the first washing unit 140 among the first washing unit 140 and the second washing unit 150 performs washing, vibrations may occur in the laundry processing device 100 due to the rotation of the motor of the first washing unit 140.

The washing course of the first washing unit 140 and the second washing unit 150 may include a washing operation, a rinsing operation, a spin-dry operation, and a drying operation. When the first washing unit 140 is performing an operation of rotating the motor rapidly as in the spin-dry cycle, the first washing unit 140 may enter an unbalance state due to the converge of the laundry, and a large vibration that may cause damage to the laundry processing device 100 may occur.

In the present invention, when a large vibration is generated in the laundry processing device 100 due to the rapid rotation of the motor 145 of the first washing unit 140, the second washing unit 150 is supplied with water and the vibration is reduced.

When vibration is generated due to the operation of the first washing unit 140, water is supplied to the second washing unit 150 disposed in the lower portion of the first washing unit 140 and the tub 202 of the second washing unit 150 is filled with liquid, so that the center of gravity of the laundry processing device 100 is lowered and the vibration is reduced.

In addition, since liquid such as water has a characteristic of absorbing seismic waves, the liquid filled in the tub 202 of the second washing unit 150 can reduce vibration generated from the first washing unit 140.

Hereinafter, each configuration for performing such an operation will be described in detail.

FIG. 3 is a block diagram illustrating a configuration of a laundry processing device according to an embodiment of the present invention.

The first washing unit 140 includes a first water supply valve 149, a first input unit 144, a first display unit 142, a motor 145 for rotating the tub, and a first controller 151 for controlling the motor 145 and the overall operation of the first washing unit 140. The second washing unit 150 includes a second water supply valve 159, a second input unit 154, a second display unit 152, a motor 155 for rotating the tub, and a second controller 151 for controlling the motor 155 and the overall operation of the second washing unit 150.

The vibration sensor 160 is disposed in a contact portion that is a portion where the first washing unit 140 and the second washing unit 150 are coupled and detects the vibration generated in the laundry processing device 100.

The vibration sensor 160 transmits detected vibration amount information to the second controller 151.

The second input unit 154 transmits a vibration detecting activation command to the second controller 151 based on user input. To this end, the second input unit 154 may have a separate vibration detecting key. According to another embodiment of the present invention, the second controller 151 may automatically perform the following operation without inputting the vibration detecting activation command.

The second controller 151 activates an operation based on the amount of vibration detected through the vibration sensor 160, when the vibration detecting activation command is inputted through the second input unit 154. Accordingly, the second controller 151 controls the second washing unit 150 to be supplied with water, in response to the detected vibration amount received from the vibration sensor 160.

Specifically, if the vibration amount detected by the vibration sensor 160 is equal to or greater than a set value, the second controller 151 controls the second washing unit 150 to be supplied with water supply so that the tub 202 is filled with a certain amount of water. If the detected vibration amount is less than the set value, the second controller 151 detects the vibration through the vibration sensor 160 and is on standby.

The second controller 151 controls the second water supply valve 159 disposed in a water supply pipe (not shown) to be opened to supply water to the second washing unit 150. The second water supply valve 159 is disposed in the water supply pipe and is controlled by the second controller 151. When the second water supply valve 159 is opened, water is supplied to the tub 202 of the second washing unit 150. When the second water supply valve 159 is closed, water supply is stopped.

When water is supplied to the second washing unit 150, the second controller 151 may adjust the amount of water supplied to the second washing unit 150 in response to the amount of vibration detected by the vibration sensor 160. Accordingly, as the amount of vibration detected by the vibration sensor 160 is increased, the amount of water supplied to the second washing unit 150 may be increased. This is because the amount of water required to reduce the vibration increases as the amount of vibration generated in the laundry processing device 100 increases.

The set value indicates the amount of vibration to such an extent that the laundry processing device 100 is damaged. That is, the fact that the amount of vibration detected by the vibration sensor 160 is equal to or greater than the set value means that a vibration is generated to the extent that there is damage to the laundry processing device 100. At this time, when the second controller 151 controls the second washing unit 150 to be supplied with water, the center of gravity of the laundry processing device 100 is lowered and the water filled in the tub 202 absorbs the vibration, so that the vibration of the laundry processing device 100 is reduced.

The second controller 151 controls the motor 155 of the second washing unit 150 to rotate at a preset speed after supplying water to the second washing unit 150. When the tub 202 of the second washing part 150 filled with water is rotated, a gyroscopic effect is generated so that the vibration of the laundry processing device 100 is reduced. To this end, the second controller 151 can calculate the rotation speed of the motor 155 of second washing unit that generates the gyroscope effect, based on the vibration amount detected in real time through the vibration sensor 160.

According to another embodiment of the present invention, the second controller 151 receives the vibration amount detected again by the vibration sensor after the second washing unit 150 is supplied with water. When the received vibration amount is equal to or greater than the set value, the second controller 151 can control the motor 155 of the second washing unit 150 to rotate at a preset speed. That is, when the vibration of the laundry processing device 100 is not stabilized even though the water is supplied to the second washing unit 150, the vibration of the laundry processing device 100 can be reduced by using the gyroscopic effect generated by the rotation of the tub 202 filled with water. When the amount of vibration detected after the water supply is performed is less than the set value, the second controller 151 can stand by until the washing operation of the first washing unit 140 is terminated. When the washing operation of the first washing unit 140 is terminated, the second controller 151 can drain the water in the second washing unit 150.

According to another embodiment of the present invention, the second controller 151 receives the amount of vibration that is detected again by the vibration sensor 160 after the second washing unit 150 is supplied with water and a set time is elapsed. When the amount of vibration detected again by the vibration sensor 160 is less than the set value, the second controller 151 controls the second washing unit 150 to perform the tub cleaning. The tub cleaning is an operation of cleaning the tub 202 of the second washing unit 150. The second controller 151 utilizes the water used for vibration reduction again for the tub cleaning.

According to another embodiment of the present invention, the second controller 151 may determine whether the first washing unit 140 is in an unbalance UB state in which the laundry is converged on a certain place based on the amount of vibration transmitted from the vibration sensor 160.

The second controller 151 controls the second washing unit 150 to be supplied with water, when it is determined that the first washing unit 140 is in the unbalance UB state.

The second controller 151 receives the amount of vibration detected again by the vibration sensor 160 after the water is supplied to the second washing unit 150. If it is determined that the first washing unit 140 is in the unbalance state based on the detected vibration amount, the second controller 151 controls the motor 155 connected to the tub 202 of the second washing unit 150 to rotate at a preset speed. The second controller 151 can control the motor 155 to rotate at a preset speed after controlling the second washing unit 150 to be supplied with water, without determining whether the first washing unit 140 is in the unbalance state UB.

FIG. 4 is a diagram for explaining a contact portion in which a vibration sensor is disposed and a structure of a laundry processing device according to an embodiment of the present invention.

FIG. 4A is a sectional view of the laundry processing device 100 according to an embodiment of the present invention. Referring to FIG. 4A, a plurality of legs 13 protruding from the rear side of the first washing unit 140 toward the second washing unit 150 and supporting the first washing unit and a plurality of holes formed in the upper surface of the second washing unit 150 are coupled to each other so that the first washing unit is fixed to the upper portion of the second washing unit. At this time, the plurality of legs of the first washing unit and the plurality of holes of the second washing unit are coupled to form a contact portion. Accordingly, a plurality of contact portions exist.

The second washing unit 150 includes a water supply pipe 71 connected to the tub 202 and a second water supply valve 159 connected to the water supply pipe 71. When the second water supply valve 159 is opened, water is supplied to the tub 202, and when the second water supply valve 159 is closed, water supply is stopped. The second controller 151 controls the opening and closing of the second water supply valve 159 to control the water supply to the second washing unit 150. The first controller 141 controls the water supply to the first washing unit 140 by controlling the first water supply valve 149.

FIG. 4B is a top view of the second washing unit 150 according to an embodiment of the present invention. The contact portion is a portion where the protruding legs 13 of the first washing unit 140 and the holes 9 a, 9 b and 9 c of the second washing unit 150 are coupled to each other. To this end, a plurality of brackets 25 for supporting a bottom surface of the first washing unit 140 may be provided in an upper end of the second washing unit 150 and the hole 9 a, 9 b, 9 c corresponding to the protruding legs 13 of the first washing unit 140 may be provided in each bracket 25.

At least one of a first hole 9 a, a second hole 9 b, and a third hole 9 c may be provided in a single bracket 25. At this time, at least one of the first hole 9 a, the second hole 9 b, and the third hole 9 c provided in the bracket 25 may be coupled with the leg 13 of the first washing unit to form a contact portion. Accordingly, even when all of the first hole 9 a, the second hole 9 b, and the third hole 9 c are formed in the bracket 25, one of the holes may be coupled with the leg of the first washing unit to form a contact portion.

Two or more contact portions may be generated as the leg 13 and the hole 9 a, 9 b, 9 c are coupled. At this time, all of the contact portions may be provided with a corresponding vibration sensor 160, and at least one of the contacting portions may be provided with the vibration sensor 160. Accordingly, at least one vibration sensor 160 may be provided.

For example, four brackets 25 may be provided in each corner of the upper end of the second washing unit 150, and three holes 9 a, 9 b, and 9 c may be included in each bracket 25. At this time, at least four coupling portions may be formed, and a vibration sensor may be disposed in any one of at least four coupling portions.

If four legs 13 of the first washing unit 140 and at least four holes of the second washing unit 150 exist, the four legs 13 are coupled to the four holes of the second washing unit 150 to form four contact portions. At least one vibration sensor 160 may be disposed in the four contact portions. That is, four vibration sensors 160 corresponding to the four contact portions may be provided, or one vibration sensor 160 may be provided only in a single contact portion. The number of the contact portions and the number of the vibration sensors 160 are not limited.

The leg 13 and the hole 9 a, 9 b, 9 c are coupled with each other so that the first and second washing units 140 and 150 are fixed and prevented from being separated from each other during operation.

The vibration sensor 160 may be disposed in a contact portion between the first unit 140 and the second washing unit 150 to detect a stack state of the first and second washing units 140 and 150.

The stack state of the first and second washing units 140 and 150 refer to a state where the first and second washing units 140 and 150 are coupled to each other. On the other hand, when vibration is generated in the laundry processing device 100, the first washing unit 140 and the second washing unit 150 may not be coupled instantaneously, and this state may be referred to as a separation state.

FIG. 5 is a diagram for explaining a structure of a vibration sensor according to an embodiment of the present invention.

The vibration sensor 160 includes a switch body 971 which is fixed inside a cabinet 2 of the second washing unit 150, a slider 974 which reciprocates inside the switch body 971, and a contact 977, 978 which is provided inside the switch body 971 and opens and closes a circuit (communication circuit or power circuit) by the slider 974.

The switch body 971 is provided with a body through hole 973 through which the slider 974 passes. The slider 974 is supported by an elastic support portion 976 provided inside the switch body 971. Accordingly, when the first washing unit 140 is mounted on the upper portion of the second washing unit 150, the slider 974 moves toward the contact 977, 978. When the first washing unit 140 is separated from the second washing unit 150, the slider 974 moves toward the direction away from the contact 977, 978.

The contact 977, 978 may include a first contact 977 which is fixed to the inside of the switch body 971, and a second contact 978 which is rotatably provided inside the switch body 971 and connected to the first contact 977 by the slider 974. When the first contact 977 and the second contact 978 are connected by the slider 974, the vibration sensor 160 detects that the first and second washing units 140 and 150 are in a stack state, and transmits this detection to the first controller 141 or the second controller 151.

The vibration sensor 160 can detect the stack state and the separation state of the first and second washing units 140 and 150 by detecting the stack state of the first and second washing units 140 and 150. In this case, the first controller 141 and the second controller 151 can control the first washing unit 140 or the second washing unit 150 to perform washing, only when the stack state of the first washing unit 140 and the second washing unit 150 is detected by the vibration sensor 160, at the start of washing. This is because the laundry processing apparatus 100 may be overturned or damaged when the first washing unit 140 or the second washing unit 150 starts washing even though the first washing unit 140 and the second washing unit 150 are not in the stack state.

The vibration sensor 160 can detects that the stack state and the separation state of the first and second washing units 140 and 150 are repeated during the washing of the laundry processing device 100, and can detect the vibration generated in the laundry processing device 100. In this case, the vibration sensor 160 can measure the repetition speed of the stack state and the separation state of the first washing unit 140 and the second washing unit 150 and detect the amount of vibration of the laundry processing device 100.

In another embodiment of the present invention, the vibration sensor 160 may include a means for detecting a pressure, and may detect the pressure applied to the contact portion of the first and second washing units 140 and 150, so that the vibration amount of the laundry processing device 100 can be detected.

FIG. 6 is a flowchart for explaining a method of controlling a laundry processing device according to an embodiment of the present invention.

In the method of controlling a laundry processing device according to the present invention, the second washing unit 150 does not perform washing, and the first washing unit 140 performs washing.

Before the first washing unit 140 starts washing, in the standby state where the operation of the second washing unit 150 is stopped, when the vibration detecting activation command is inputted through the second input unit 154, the second controller 151 activates the vibration detection (S10). Thereafter, the first controller 141 controls the first washing unit 140 to perform washing according to the setting inputted through the first input unit 144 (S11).

The vibration detection activation command may be inputted even after the first washing unit 140 starts washing. When the second washing unit 150 is turned on, the second controller 151 can activate the vibration detection without a separate vibration detecting activation command.

The second controller 151 controls the second washing unit 150 to perform a specific operation, based on the amount of vibration transmitted from the vibration sensor 160 when the vibration detection is activated. Thereafter, when the vibration is detected through the vibration sensor 160 during standby, the second controller 151 determines the amount of vibration and controls the operation of the second washing unit 150.

When the motor rotates rapidly as in the drying operation during the washing operation of the first washing unit 140, a large vibration that may cause damage to the laundry processing device may occur, and the first washing unit 140 may enter an unbalance state.

The vibration sensor 160 is disposed in a contact portion between the first washing unit 140 and the second washing unit 150 to detect the stack state of the first washing unit 140 and the second washing unit 150, so that the amount of vibration generated in the laundry processing apparatus 100 is detected (S12). According to another embodiment of the present invention, the vibration sensor 160 may detect the vibration amount by detecting the pressure applied to the contact portion of the first and second washing units 140 and 150. The vibration sensor 160 transmits the detected vibration amount to the second controller 151.

The second controller 151 receives the vibration amount detected from the vibration sensor 160, and compares the detected vibration amount with a set value. If the detected vibration amount is equal to or greater than the set value (S13), the second controller 151 controls the second washing unit 150 to be supplied with water (S14). The second controller 151 can adjust the water supply amount according to the detected vibration amount. Accordingly, as large vibration is generated, the water supply amount is increased.

The second controller 151 controls the motor 155 of the second washing unit to rotate at a preset speed, after the water is supplied to the second washing unit 150 (S15). Accordingly, the gyroscope effect is generated so that the vibration of the laundry processing device 100 is reduced.

When a vibration exceeding a set value is generated in the laundry processing apparatus 100, the laundry processing apparatus 100 may be damaged. Therefore, the second controller 151 lowers the center of gravity of the laundry processing apparatus 100 by performing water supply to the second washing unit 150, absorbs vibration through the supplied water, and rotates the motor 155 of the second washing unit to generate a gyroscopic effect, thereby reducing vibration.

The vibration sensor 160 detects the vibration amount again after the set time is elapsed (S16). The vibration sensor 160 transmits the detected vibration amount to the second controller 151.

The second controller 151 receives the vibration amount that is detected again, and compares the received vibration amount with the set value. If the detected vibration amount is less than the set value (S17), the second controller 151 controls the second washing unit 150 to perform tub cleaning (S18). This is to utilize the water used for vibration reduction once again for the tub cleaning of the second washing unit 150.

If the detected vibration amount is equal to or greater than the set value, the second controller 151 rotates the motor 155 of second washing unit to reduce the vibration (S15).

According to another embodiment of the present invention, after the water is supplied to the second washing unit 150 and the set time is elapsed, the vibration sensor 160 detects the vibration amount again and transmits the vibration amount to the second controller 151.

When the amount of vibration which is detected again by the vibration sensor 160 after the water is supplied to the second washing unit 150 is equal to or greater than the set value, the second controller 151 controls the motor 155 of the second washing unit to rotate at a preset speed. The second controller 151 does not perform the control of the second washing unit motor 155, when the amount of vibration which is detected again is less than the set value. This is to save the power use by not operating the motor 155 of second washing unit, when the vibration is sufficiently reduced only by water supply.

According to another embodiment of the present invention, the second controller 151 determines whether the first washing unit 140 is in an unbalance state based on the amount of vibration detected through the vibration sensor 160. When it is determined that the first washing unit 140 is in an unbalance state, the second controller 151 performs water supply to the second washing unit 150 and rotates the motor 155 of second washing unit at a preset speed.

Although the exemplary embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. Accordingly, the scope of the present invention is not construed as being limited to the described embodiments but is defined by the appended claims as well as equivalents thereto. 

1. A laundry processing device comprising: a first washing unit which performs washing; a first controller which controls operation of the first washing unit; a second washing unit which is installed in a lower portion of the first washing unit to be in contact with the first washing unit, and performs washing independently; a vibration sensor which is disposed in a contact portion of the first washing unit and the second washing unit to detect vibration; and a second controller for controlling the second washing unit to be supplied with water in response to the vibration detected by the vibration sensor, in a state where the second washing unit does not perform washing.
 2. The laundry processing device of claim 1, wherein the vibration sensor is disposed in the contact portion of the first washing unit and the second washing unit to detect a stack state of the first washing unit and the second washing unit.
 3. The laundry processing device of claim 1, wherein the second controller controls the second washing unit to be supplied with water, when the vibration amount detected by the vibration sensor is equal to or greater than the set value.
 4. The laundry processing device of claim 1, wherein the second controller controls the second washing unit to be supplied with water, if it is determined that the first washing unit is in an unbalance state in response to the vibration detected by the vibration sensor.
 5. The laundry processing device of claim 1, wherein the second controller controls the motor of the second washing unit to rotate at a preset speed, after the water is supplied to the second washing unit.
 6. The laundry processing device of claim 1, wherein the second controller controls the second washing unit to perform tub cleaning, when the amount of vibration detected by the vibration sensor is less than the set value after the water is supplied to the second washing unit and the set time is elapsed.
 7. The laundry processing device of claim 1, wherein the second controller controls the second washing unit to be supplied with water in response to the vibration detected by the vibration sensor in a state where the second washing unit does not perform washing, when a vibration detecting activation command is inputted through a second input unit provided in the second washing unit.
 8. The laundry processing device of claim 1, wherein the second controller adjusts the amount of water supplied to the second washing unit in response to an amount of vibration detected by the vibration sensor, when the water is supplied to the second washing unit.
 9. A method for controlling a laundry processing device comprising a first washing unit and a second washing unit for performing washing in an independent washing space, wherein the first washing unit is disposed above the second washing unit, the method comprising: a start step of performing washing according to an inputted setting by the first washing unit; a detection step of detecting a vibration amount by a vibration sensor disposed in a contact portion of the first washing unit and the second washing unit; and a control step of controlling the second washing unit to be supplied with water, in response to a vibration detected by the vibration sensor, in a state where the second washing unit does not perform washing.
 10. The method of claim 9, wherein the control step comprises: a comparison step of comparing the vibration amount detected by the vibration sensor with a set value; and a water supply control step of controlling the second washing unit to be supplied with water, when the detected vibration amount is equal to or greater than the set value.
 11. The method of claim 9, wherein the control step comprises: a determination step of determining whether the first washing unit is in an unbalance state in response to a vibration detected by the vibration sensor; and a water supply control step of controlling the second washing unit to be supplied with water, when it is determined that the first washing unit is in the unbalance state.
 12. The method of claim 9, further comprising a motor control step of controlling the motor of the second washing unit to rotate at a preset speed, after the water is supplied to the second washing unit.
 13. The method of claim 9, further comprising the steps of: re-detecting the vibration amount through the vibration sensor, after the water supply to the second washing unit is completed; and stopping an operation of the second washing unit and being on standby, when the re-detected vibration amount is less than the set value, and controlling the motor of the second washing unit to rotate at a preset speed, when the re-detected vibration amount is equal to or greater than the set value.
 14. The method of claim 10, further comprising a step of controlling the second washing unit to perform a tub cleaning, when the amount of vibration that is detected by the vibration sensor after an elapse of a set time becomes less than the set value. 